<insert Frank Anselem's name here>
FWIW, I just did the math. Dating back to the 2011 recruiting class:
Kentucky's put 40.5% of their 4 & 5 star prospects into the NBA Lottery (41.9% of their 5 stars).
Compared to some peers:
- Syracuse: 5.9% and 20% respectively
- Kansas: 19% and 33.3% respectively
- Duke: 31% and 50% respectively
- Arizona: 14.8% and 21.4% respectively
- UNC: 0%
In terms of turning 4 & 5 star prospects into long-term starters in the NBA:
- Kentucky: 48.6%
- Syracuse: 17.6%
- Kansas: 33.3%
- Duke: 58.6%
- Arizona: 25.9%
- UNC: 11.8%
In terms of reaching the NBA (aka appearing in at least one game):
- Kentucky: 78.4%
- Syracuse: 47.1%
- Kansas: 47.6%
- Duke: 72.4%
- Arizona: 40.7%
- UNC: 41.2%
There was some cases of players going to a school, transferring away, and then reaching the NBA that slightly skew the numbers but it would be too much work for me to track everyone down. Some examples: BJ Johnson technically is a Syracuse recruit that made it to the NBA. Gbinije is technically a Duke recruit. Andrew White is technically a Kansas recruit. And Semi Ojeleye is technically a Duke recruit. But all in all, I think the numbers are pretty clear.
I would also point out that every recruit is different. For example, Tyler Ulis was a 5 star PG but nobody viewed him as a good NBA prospect due to his size. His draft stock almost certainly improved during his time at Kentucky to eventually become a 2nd round pick. The same is true to different extents for guys like Tyus Jones, Tyler Ennis, and more extreme, Dajuan Coleman. But again, those guys are all included because they are what they are and it would be too difficult for me to go back through hundreds of recruits and try to figure out what their draft stock looked like before they arrived on campus.
TLDR: Kentucky and Duke turn out NBA talent at a significantly better rate than anyone else even if you focus specifically on the 5 stars that every school gets. After that it seems relatively even though it can vary depending on how exactly you want to slice and dice it.
Also, Frank Anselem.